Minimise friction while sleeping to wake up with less frizz. Rough cotton can...

https://griffinphut760.theglensecret.com/why-does-my-hair-tangle-at-the-back-of-my-head-overnight

Minimise friction while sleeping to wake up with less frizz. Rough cotton can cause breakage, so try a silk pillowcase instead. For an easy habit, secure your hair in a loose, low braid before bed